a wire of resistance 5 ohm is bent in the form of a closed circle what is the effective resistance b/w 2 points at the ends of any diameter in the circle
Asked by | 10th Jul, 2011, 04:42: AM
Expert Answer:
The length of the wire between two points at the ends of a diameter of a circle is
half of the whole wire. The resistance of a conductor is directly proportional to its
length.
Thus, the two resistance 5/2 ohm will be in parallel.
Let R be the effective resistance.
1/R=2/5+2/5
1/R=4/5
R=5/4=1.25 ohm.
The length of the wire between two points at the ends of a diameter of a circle is
half of the whole wire. The resistance of a conductor is directly proportional to its
length.
Thus, the two resistance 5/2 ohm will be in parallel.
Let R be the effective resistance.
1/R=2/5+2/5
1/R=4/5
R=5/4=1.25 ohm.
Answered by | 11th Jul, 2011, 11:08: AM
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